Daylight saving time (DST) in Australia was first observed on October 1, 1916, during World War I as an energy-saving measure. Initially, only some parts of Australia used it. Tasmania was the first state to adopt daylight saving permanently in 1967. Following Tasmania, New South Wales, Victoria, Queensland, South Australia, and the Australian Capital Territory started observing daylight saving regularly in the early 1970s. Currently, DST in Australia begins on the first Sunday in October and ends on the first Sunday in April. This schedule applies to New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory. Queensland, Western Australia, and the Northern Territory do not observe daylight saving time.
So, the very first start of daylight saving time in Australia was on October 1, 1916.
